I want to do up a simple top down cardigan sweater. Are these hard to do? I can get help with the button holes on Wed's at the knitting shop (if I need to). I've done several top down pull overs but never a cardigan.

They're very easy. The only difference is that you'll knit back and forth rather than in the round.

If you've done other top down sweaters you won't have a problem. You simply don't join and knit back and forth instead.